Activation of the ASTRO-E hard X-ray detector in low Earth orbit

M. Kokubun*, Y. Fukazawa, E. Idesawa, J. Kataoka, T. Kamae, K. Matsuzaki, T. Mizuno, Y. Saito, T. Takahashi, K. Takizawa, M. Tashiro, T. Tamura, A. Yoshida

*この研究の対応する著者

研究成果: Conference contribution

1 被引用数 (Scopus)

抄録

ASTRO-E Hard X-ray Detector (HXD) is characterized by well-type phoswich counters in a compound-eye configuration which reduce the X-ray and non X-ray background to lower level than any other past hard X-ray missions. When operating in Low Earth Orbit, the expected background of the HXD is an order of 10-5[counts/s/keV/cm2], mainly caused from the radioactivity induced within the detector materials by nuclear interactions with geomagnetically trapped protons. Results are presented from measurements of induced radioactivity in two phoswich scintillators, GSO and BGO, irradiated by mono-energetic protons at an accelerator facility. Radiation transport computer codes are used to build the detector response functions against emissions from decays of spallation products. Based on the comparison of experimental and simulation results, the activation background level of HXD in the orbit is estimated.

本文言語English
ホスト出版物のタイトルIEEE Nuclear Science Symposium and Medical Imaging Conference
出版社IEEE
ページ227-232
ページ数6
ISBN(印刷版)0780350227
出版ステータスPublished - 1999
外部発表はい
イベントProceedings of the 1998 IEEE Nuclear Science Symposium Conference Record - Toronto, Que, Can
継続期間: 1998 11 81998 11 14

出版物シリーズ

名前IEEE Nuclear Science Symposium and Medical Imaging Conference
1

Other

OtherProceedings of the 1998 IEEE Nuclear Science Symposium Conference Record
CityToronto, Que, Can
Period98/11/898/11/14

ASJC Scopus subject areas

  • 放射線
  • 核物理学および高エネルギー物理学
  • 放射線学、核医学およびイメージング

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